I also have both. The A2 is perfect for reading a map or gps in the car (while wife is driving) then popping it out the window to light up street signs or house numbers. Also the A2 makes an excellent reading light anytime. A2 gives you a choice of LED and Incan. A2 out throws the L2, in heavy rain or fog the A2 REALLY out throws the L2. I would use the L2 to light up a room while the power is out and I needed a lot of light for a large, complicated task, and the A2 when navigating or walking outside or almost anything else. The A2's 3 led's are almost perfect for walking in the dark, then switch in the incan to look for more trail blazes (Appy Trail). The A2 is my EDC and what I use around the house as well. Mine hasn't proved to be that fragile as it has been dropped and I have fell with it twice on wet rocks and no harm done so far.
And for the truly paranoid, the A2 has four bulbs. So no problem in having at least some kind of light when you hit that switch. You can also choose, at time of purchase, a different color of LED - blue, red, green, or yellow-green. So you wouldn't actually need a filter to have a different color if you needed the color on low and white on high. I have the white.
You can probably guess I prefer the A2, but I wouldn't lose too much sleep if I had to switch full time to my L2.